Good news TBBT fans! Not only do we have some information about the upcoming "The Big Bang Theory Season 7 Episode 18" we also have news that confirmed that CBS renewed the show for three more seasons!

The Big Bang Theory season 7, episode 18 will pick up where last week's episode left off, according to the promo and stills released for this week's geeky tango. The episode, titled "The Mommy Observation," will focus on Sheldon and Howard's unfortunate adventures upon arriving safely on the ground in Houston.

The official synopsis for "The Mommy Observation" also sheds some light on what Raj and the rest of the gang will be up to this week.

"When Sheldon visits his Mom in Houston, he is forced to confront a new reality. Meanwhile, Raj's 'Murder Mystery' party starts some fights within the gang."

Seeing his mom in a new relationship (not to mention witnessing the relations part of the relationship) has got to be rough on Sheldon, who never met a change he actually approved of.

The stills released for "The Mommy Observation" give us a good look at Howard trying to handle Sheldon, as well as the return of Laurie Metcalf as Mrs. Cooper. Kevin Sussman will also appear as Stuart who appears to be the "victim" at Raj's murder mystery party.

In a rare multi-season renewal, CBS announced that it has ordered three further seasons of The Big Bang Theory. The deal will carry the show, currently in its seventh season, through to its tenth season in 2017.

Nina Tassler, chairman of CBS Entertainment, spoke enthusiastically about the The Big Bang Theory and the show's renewal. "Comedy is a big part of our schedule, and The Big Bang Theory is the biggest comedy force on television," she said. "This multi-year deal further strengthens our network's position for future seasons and marks another chapter in the great partnership CBS enjoys with Warner Bros. Television for delivering audiences the best in comedy."